Floor vent



0a. so, 1923.

A. J. FILKINS FLOOR VENT Filed Aug. 5, 1925 II III" I I I II Patented Oct. 30, 1928.

UNITED STATES coarona'rnn, A conronnrron on rumors.

rnoon vnn'r;

amination filed August 5, 1925. Serial No. 48,205.

This invention relates to improvements in floor vents. f i

One of the objects ot'the present invention is to provide an improvedvent construc- 8 tion which is particularly adapted for floors of theatres, auditoriums and the l ke, and which is. simple in construction, and efiicient inoperation. 1

A further-object of the invention is to pro 1 vide an improved floorvent which may be easily adjusted for; controlling the amount of air passing through the vent.

A further object of the invention is to provide an improved floor vent which will per- 16 mit proper distribution of the air and at the same time will properly support itself in a securely fixed position in the aperture provided for it in the floor. .4 i r A still further object of the invention 1s to 0 provide an improved means for, securing a floor vent to the floo-n, j j

These and-other objects are accomplished by providing a construction and an arrangement of the various objects in the manner 25 hereinafter described and particularly pointed out in the appended claims;

Referring to the drawing, Fig. 1. is a side elevational View of improved floor vent showing a portion of the same in cross section. i j j a g V Fig, 2 isa top plan view of the same showing the cap partially broken away. r w Fig. 3 is a partial cross sectional view taken on the lines 3-3 i-nFig. 2, showing the construction of'my improved means for securing the vent to the floor. A

In the construction of my improved floor vent, I have found it important to construct the base of the same in a parallelogram or 40 rectangular form, not only for. the purpose of facilitating the instalIat-ionof these vents, but for properly supporting and maintaining them in a rigidly fixed position after once installed in the aperture provided for them in 46 the floor.

In the embodiment of my invention as shown in the drawing, my improved floor vent comprises a base generally referred to by the character 10 which comprises a vertiso cal projecting flange 11 arranged in the form of a parallelogram or rectangle about the base of the vent. Formed integrally with the rectangular flange 11 is a horizontal portion 12 which forms a flange as shown at 13, an arranged at right angle to the flange 11 and extending around the perimeter of the base; This flange 13 is adaptedto engage the top of the floor adjacent the aperture 14 inthe PATENT OFFICE.

floor 15, shown in Fig. 1. Extending vertically through the base ofthe vent is an oval or oblong aperturelG through which the. air

passes. Surrounding the aperture 16" and formed integrally with the horizontal po1r tion 12 and flangelil isan upwardly projecting flange 17. j I L Another important feature of myr i n proved floor vent is thelprovision of an improved means for adjustably mounting the capto the base of the vent. This: comprises a plurality of depending fork members 18 formed integrally with the oval shapedcap 19. These members are preferably positioned on the diametrically oppositesidcs; of the cap and are adapted to slidingly engage the inner'side of the flange 17 of the base-10 These fork members havej their inner e es recessed or channelled as shown at 20- for slid ably receiving therein the nuts 24 ofthesecuring bolts 25. The bolts 25 extend through the apertures 26 in the flange 1'7 From the above it will be seen that when it is desired to adjust thecap 19 for regulat- 'ing the amount of air passing through the vent, the four bolts-may be loosened. and the cap adjusted relative to the base, to any dea sired position and retained in this position by securing the bolts, in place. The cap 19 has its outer ends as shown at 27, curved downwardly somewhat in the form of a mushroom for the purpose of deflecting and evenly distributing the air' from the floor vent.

Another important feature of my improved device is a simple manner which I a have provided for securing the vent to the floor. This comprises L-shaped bolts 28 which have theirlower or horizontal portion 29 adapted to engage the lower side of the floor 15 adjacent the opening therein, and

their vertical portions extending through apertures 30 formed in the four corners of the rectangular base adjacent the flange 11. These L-shaped bolts have their upper ends threaded as shown at 31 and are adapted to receive in threaded engagement therewith, nuts 32. 1

From the foregoing description it will be readily understood that by reason of my improved securing means, that the floor vent or base thereof, may be securely fixed or sup ported in position in the aperture in the floor and that the corner portions of the rectangular base projecting beyond the curveo edges of the aperture in the base to or beyond the periphery of the vent cap greatly strengthen the supporting effect of the base in tending to hold the vent cap in rigid relation with the floor, while the rectangular shape of the base makes possible the use of rectangular apertures in floors which are more easily. accurately and cheaply formed than circular or oval apertures in floors in which it is desired to install floor vents. The oval form of vent cap is a preferred construction because when used as commonly installed beneath the rear edge of a folding theatre seat it offers an outlet for a maximum dis charge from a ventilator duct without objectionable protruding corners or other portions of the vent cap above the floor particularly when seats are folded to permit passage between parallel rows of seats, and my improved base vent construction permits the use of the oval form or the circular form of vent cap with a rectangular floor opening and in combination with an air pipe or duct rectangular in cross section when desired.

While in the above specification I have described one embodiment of my invention, it will, of course, be understood that the same is capable of modification and that modifi *2 tion may be made without departing from the spirit and scope of the invention as expressed in the following claims.

What I claim as my invention and desire to secure by Letters Patent is:

1. A floor vent comprising a base having a vertically depending flange extending around said base in the form of a rectangle for engagement with the fioor adjacent the aperture formed therein, said base having an oblong aperture extending therethrough, a cap mounted on said base having a plurality of spaced fork members slidingly engaging said base and having oppositely disposed recessed portions formed therein: and bolts extending through said base and having nuts engaging the recessed portions of said fork members for adjustably securing said cap to said base.

2. A floor vent comprising a base having a vertically depending flange extending around said base in the form of a rectangle, a laterally projecting llange positionml at right angles to said first named flange and extending around said base, a cap mounted on said base having a plurality of depending fork members slidably engaging said base, said members having oppositely disposed recessed portions formed therein, a plurality of bolt and nut connections co-operable with said base and the recessed portions of said fork members for adjusting said cap with respect to said base, and a plurality of L shaped bolts extending through said base adjacent the corners of said lirst named flange and engageable with the lloor for securing said vent in place.

3. A floor vent comprising a rectangular base having an oblong aperture extending therethrough, a vertically projecting flange surrounding the aperture in said base and extending upwardly therefrom, an oblong cap provided with a plurality of downwardly projecting fork members having recessed portions formed therein and adapted to receive nuts in a manner to prevent rotation thereof, and a plurality of bolts co-operable with said flange and nuts for adjustably securing said cap to said base.

-l. A floor vent comprising a rectangular base having an oval shaped aperture extending theretln'ough, a vertically disposed flange surrounding said aperture and extending upwardly from said base, a plurality of l.- shaped bolts mounted at the corners of said base for securing the base in place, an oval shaped cap positioned above said aperture, and means for adjust-ably securing said cap to said base, said means comprising a plurality of fork members extending downwardly from said cap and having recessed portions formed therein, a plurality of threaded bolts extending through apertures in said llange, and between the spaced apart portions of the respective fork members, and a plurality of nuts positioned in said recessed portions in a manner to be held against rotation therein and co-operable with said bolts in a manner to clamp said members to said flange.

In testimony whereof I have signed my name to this specification on this 30th day of July, A. D. 1925.

ARTHUR J. FILKINS. 

